EFFECTS OF GEOGRID REINFORCEMENT ON THE STATIC LIQUEFACTION BEHAVIOR OF GRANULAR FILL BY TRIAXIAL TEST METHOD
DOI:
https://doi.org/10.11113/jt.v78.9632Keywords:
Static liquefaction, triaxial test, granular fill, geogrid, bearing capacityAbstract
Replacing theexistingweaksoilby granularfillmaterial(partialorfull)isone oftheconventionalstabilisationtechnique toimprovethebearing capacity and liquefactionbehaviorofthesoil.However, inmanycasesthedepthofreplacedgranular fillbecomesvery thick,thusleadtothe excessive cost. In the solution to this problem an experimental investigation was initiated to evaluate the effectofgeogrid reinforcementonthe staticliquefaction resistance of granularfillobtainedfrom Karaikudi, SivagangaiDistrict,Tamilnadu, India. An experimental program through triaxial compression was conduct and with various investigation on geogrid layers confining pressures. It was observedthat the extensile force of thegeogridgradually contributestothe improvementof the reinforcedspecimensshear strengthandthe extensileforceincreasedwiththeincrease inthe numberofgeogridlayers,asa result thefailuremodechangedfromshearband tobulging.Theinstalledgeogridlayersin thegranular fillimprovedthestress–strain response intermsofincrease inpeak deviatoric stressanddecrease infailure strains.Inaddition,the extensile force providesbetterinterlocking propertytothe granular  fill  be  arranged  between  the geogrid,leading tothedecreaseinthe pore waterpressure.Underaconfining pressureof150 kPatheporewaterpressure of the un-reinforced specimen was about 117 kPa,whereasthegranular fillreinforced withone,twoandthree layersofgeogrid achieved   the  pore   water  pressure  of 97.5 kPa,76.5 kPa and49.5 kPa,respectively, whichare 20.12 %,52.94 % and136.36 %, lower than thatofthe un-reinforced specimen. The findings conclude that the geogrids considerablyinfluencetheshearbehaviour of granular fill, andthe geogrid reinforcement improvesthe interlocking strengthof thegranularfill,thusimproving its shear strengthReferences
Liu, J., Wang, G., Kamai, T., Zhang, F., Yang, J. and Shi, B. 2011. Static Liquefaction Behavior of Saturated Fiber-Reinforced Sand in Undrained Ring-Shear Tests. Geotextiles and Geomembranes. 29(5): 462-471.
El Sawwaf, M.A.. 2007. Behavior of Strip Footing on Geogrid-Reinforced Sand over a Soft Clay .Slope. Geotextiles and Geomembranes. 25(1): 50-60.
Basudhar, P.K. 2010. Modeling of Soil–Woven Geotextile Interface Behavior from Direct Shear Test Results. Geotextiles and Geomembranes, 28(4): 403-408.
Yang, G., Zhang, B., Lv, P. and Zhou, Q. 2009. Behaviour of Geogrid Reinforced Soil Retaining Wall with Concrete-Rigid Facing. Geotextiles and Geomembranes. 27(5): 350-356.
Cancelli, A., Rimoldi, P. and Togni, S. 1992. Frictional Characteristics of Geogrids by Means of Direct Shear and Pull-Out Tests. InProc. of IS Kyushu 92 Int. Symposium on Earth Reinforcement Practice.
Alawaji, H.A. 2001. Settlement and Bearing Capacity of Geogrid-Reinforced Sand over Collapsible Soil. Geotextiles and Geomembranes. 19(2):75-88.
Liu, C-N., Ho. Y-H., Huang, J-W. 2009. Large Scale Direct Shear Tests of Soil/PET-yarn Geogrid Interfaces. Geotextiles and Geomembranes. 27: 19–30.
Phanikumar, B. R., Prasad, R., and Singh, A. 2009. Compressive Load Response of Geogrid-Reinforced Fine, Medium and Coarse Sands. Geotextiles and Geomembranes. 27(3): 183-186.
Indraratna, B., Ngo, N. T. and Rujikiatkamjorn, C. 2011. Behavior of Geogrid-Reinforced Ballast under Various Levels of Fouling. Geotextiles and Geomembranes. 29(3): 313-322.
Ornek, M., Laman, M., Demir, A. and Yildiz, A. 2012. Prediction of Bearing Capacity of Circular Footings on Soft Clay Stabilized with Granular Soil. Soils and Foundations. 52(1): 69-80.
Demir, A., Laman, M., Yildiz, A. and Ornek, M. 2013. Large Scale Field Tests on Geogrid-Reinforced Granular Fill Underlain by Clay Soil. Geotextiles and Geomembranes. 38: 1-15.
Sitharam, T. G. and Hegde, A. 2013. Design and Construction of Geocell Foundation to Support the Embankment on Settled Red Mud. Geotextiles and Geomembranes. 41: 55-63.
Ladd, R.S. 1974. Specimen Preparation and Liquefaction of Sands. Journal of Geotechnical and Geoenvironmental Engineering, 100(Proc. Paper 10857 Proceeding).
Chen, X., Zhang, J. and Li, Z. 2014. Shear Behaviour of A Geogrid-Reinforced Coarse-Grained Soil Based On Large-Scale Triaxial Tests. Geotextiles and Geomembranes. 42(4): 312-328.
Boominathan, A. and Hari, S. 2002. Liquefaction Strength of Fly Ash Reinforced with Randomly Distributed Fibers. Soil Dynamics and Earthquake Engineering. 22(9): 1027-1033.
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